To provide a pneumatic tire capable of realizing uniform wear of a block of the tire when a vehicle runs by improving a block pattern of a tread part and suppressing worsening of noise due to partial wear after running properly.

This pneumatic tire has a block row formed by a plurality of channels 1 in the peripheral direction extending continuously in the peripheral direction and a plurality of lateral channels 2 provided at an adequate interval in the peripheral direction in at least a tread central region. The block 3 constituting the block row has substantially rhombic shape, and rigidity of the block 3 is gradually reduced toward a kicking-off side from a stepping-on side.